Abstract: A cleaning device for a drum being partially looped around by a conveyor belt having an upper and a lower stringer, the cleaning device being arranged in between the upper and lower stringers and comprises a plurality of strippers disposed for abutting the drum; a hydraulic cylinder mounts said strippers and a piston rod mounts carrying a piston, mounts the hydraulic cylinder which reciprocates on the piston; a plurality of downwardly extending soil shifting plates are mounted on the cylinder and move therewith; a dirt catching trough is pivotally mounted underneath the cylinder and stripping bars extend across an open surface of the trough and being in engagement with the soil pushing plates for cleaning these plates upon pivoting of the trough.

Abstract: A rotary wheel excavator having scoops with impact cutters only at the two front corners of the cutting edge of each scoop. Structure is provided for vibrating each impact cutter during a predetermined portion of the rotation of the wheel. The left and right hand impact cutters on each scoop are independently controlled, depending on the direction of swing of the excavator boom. The operation of the impact cutters is preferably under the control of a hydraulic system.

Abstract: Transport apparatus is provided for heavy duty equipment which allows for the interchangeable connection of the caterpillar power drive units used for transport of a plurality of supporting frames holding different pieces of heavy equipment. A lesser number of expensive drive units is required for moving a lot of equipment. This is achieved by providing separate support bases or feet for each of the supporting frames. Each of the bases include a mechanism for lifting the supporting frames so that the power drive units can move under the supporting frame being transported. Also, each of the caterpillar power drive units include a connector device for connection to the supporting frame to be supported. Each connector device, in turn, includes hydraulically operated arms for relative vertical displacement between the drive unit and the support frame and universal relative horizontal displacement.